21858904870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198717317}}^1$

素因数の和:198717335

約数の個数: 16

約数和(自身を含む): 42922940688

約数和(自身を除く): 21064035818

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198717317, 397434634, 993586585, 1987173170, 2185890487, 4371780974, 10929452435, 21858904870]

約数ペア:

[(1, 21858904870), (2, 10929452435), (5, 4371780974), (10, 2185890487), (11, 1987173170), (22, 993586585), (55, 397434634), (110, 198717317)]